| File extension | The full name of the file |
|---|---|
| File extension K | MacroModel Chemical Modeller Output |
| File extension K01 | Clarion Database Key |
| File extension K02 | Clarion |
| File extension K03 | Clarion DOS Database Key |
| File extension K1 | DataFlex Index |
| File extension K10 | DataFlex Index |
| File extension K11 | DataFlex Index |
| File extension K12 | DataFlex Index |
| File extension K13 | DataFlex Index |
| File extension K14 | DataFlex Index |
| File extension K15 | DataFlex Index |
| File extension K2 | DataFlex Index |
| File extension K25 | Kurzweil 2500 Sample Format |
| File extension K26 | Kurzweil 2600 Sample Format |
| File extension K2P | Kryptel Encrypted |
| File extension K2S | Kaiser 2 Saved Game |
| File extension K3 | DataFlex Index |
| File extension K3B | K3b Burning Project Format |
| File extension K3G | 3GP Mobile Phone Video Format |
| File extension K4 | DataFlex Index |
| File extension K48 | Apple IOS Kernel Cache |
| File extension K5 | DataFlex Index |
| File extension K6 | DataFlex Index |
| File extension K7 | DataFlex Index |
| File extension K8 | DataFlex Index |
| File extension K9 | DataFlex Index |
| File extension KA | Karma Engine (Unreal) Asset |
| File extension KAD | Kore User |
| File extension KAHL | Think Pascal KAHL Text |
| File extension KAL | KManager Calibration Data |
| File extension KAN | Kwalitan Annotation |
| File extension KAP | Maptech BSB Map Format |
| File extension KAR | MIDI Karaoke Format |
| File extension KAS | Karaoke |
| File extension KB | Borland C++ Keyboard Script Format |
| File extension KB2 | Carroll-Net Kleo Backup Format |
| File extension KBB | BestCrypt Key Block Backup |
| File extension KBD | Keyboard Script File Layout |
| File extension KBF | MyInfo Document |
| File extension KBM | Scala Keyboard Mapping |
| File extension KBN | TeamSpeak Keybinding |
| File extension KBS | Keyboard Script Saved Keystrokes Format |
| File extension KBX | GNU Privacy Guard Keybox |
| File extension KC2 | Kodak RAW Image |
| File extension KCF | KiSS Configuration |
| File extension KCH | KChess Notation |
| File extension KCI | Visual Studio .NET DB Project Indexing Settings |
| File extension KCL | Mario Kart Wii Collision Information Format |
| File extension KCT | Keyman Developer Customization Source |
| File extension KD3 | Yayoi Kaikei Accounting Data |
| File extension KDA | Nova Logic Game |
| File extension KDB | Encrypted Passwords Database Format |
| File extension KDBX | KeePass Password Database Format |
| File extension KDC | Kodak DC120 Digital Camera RAW Image Format |
| File extension KDD | Adobe Authorware RTF Objects Editor Knowledge Display |
| File extension KDE | Kaspersky KryptoStorage Encrypted Format |
| File extension KDELNK | KDE Desktop |
| File extension KDENLIVE | Kdenlive Project Format |
| File extension KDEVDLG | KDevelop Dialogue Box Format |
| File extension KDEVELOP | KDevelop Project Data Format |
| File extension KDEVPRJ | KDevelop Project Format |
| File extension KDF | KARMA MW/Triton Data |
| File extension KDH | Chinese Academic Journals Online Full-text Database |
| File extension KDI | KD Player Skin Image Format |
| File extension KDK | Kodak Proprietary Decimated TIFF Format |
| File extension KDL | Kill The Deadline Storage |
| File extension KDMP | Microsoft Windows Crash Dump Format |
| File extension KDR | Kinetica Installation |
| File extension KDS | KD Player Skin Format |
| File extension KDT | Medbasin Evaporation Data |
| File extension KDX | Google Earth Import Definition |
| File extension KDZ | Kaspersky Anti-Virus Data Format |
| File extension KEB | Kaspersky Anti-Virus Data Format |
| File extension KED | KEDIT Profile And Macro Format |
| File extension KEP | Turbo Pascal DOS Tp19 Compressed Kepler |
| File extension KER | ENVI Filter Kernels |
| File extension KES | Kurzweil 3000 Document Format |
| File extension KEV | JAWS Preload |
| File extension KEX | KEDIT Profile Macro |
| File extension KEXI | Kexi Database Format |
| File extension KEXIC | Kexi Database Connection Settings Format |
| File extension KEXIS | Kexi Database Connection Format |
| File extension KEXT | Apple Mac OS X Kernel Extension Format |
| File extension KEY | Licence Or Encrypted Security Format |
| File extension KEY-TEF | Apple Keynote ICloud Presentation Format |
| File extension KEYBOARD | Amaya Configuration |
| File extension KEYCHAIN | Apple Keychain Password Format |
| File extension KEYNOTE | IWork Keynote 06 Presentation |
| File extension KEYSTORE | Java Keytool Key Database |
| File extension KEYTAB | Unix Kerberos Encrypted Key |
| File extension KF | The Elder Scrolls Game |
| File extension KF8 | Amazon Kindle Format 8 |
| File extension KFG | Adobe Acrobat Rule |
| File extension KFI | 3D Forgastest Editor |
| File extension KFL | Microsoft Outlook 2007/2010 RSS Feed List |
| File extension KFM | GameBryo KFM Format |
| File extension KFN | KaraFun Karaoke Song Format |
| File extension KFS | Max Payne Model |
| File extension KFT | Korg T-series Wave |
| File extension KFX | Kofax Group 4 Bitmap Graphics Format |
| File extension KGB | KGB Archiver Compressed Archive Format |
| File extension KGE | KGB Archiver Encrypted Compressed Archive |
| File extension KGM | KeyTERRA-FIRMA Ground Model |
| File extension KGS | Kogeo Toolbar |
| File extension KHD | Microsoft Dynamics AX Kernel Help Data Format |
| File extension KHI | Microsoft Dynamics AX Kernel Help Index Format |
| File extension KIC | Kodak Compressed Image Format |
| File extension KID | Kidspiration Document Format |
| File extension KID2 | Kid Pix |
| File extension KIDS | Kid Pix |
| File extension KIF | AutoCAD Key Index |
| File extension KIN | Cakewalk Kinetic Music Project Format |
| File extension KISMAC | KisMAC Web Service Format |
| File extension KIT | 20-20 Design Kitchen Design Format |
| File extension KIX | KiXtart Script Format |
| File extension KJV | TheWord Bible Software King James Version Bible |
| File extension KKD | K Kitchen Burning Project |
| File extension KKW | Adobe RoboHelp Keyword Help Project Index |
| File extension KLC | Microsoft Keyboard Layout Creator Keyboard |
| File extension KLD | Dungeon Keeper 2 Playable Map |
| File extension KLF | KaloMa |
| File extension KLG | Log Format |
| File extension KLK | Orgadata LogiKal |
| File extension KLM | Keyhole Markup Language (Google Earth) |
| File extension KLP | CLIP PROJECT Terminal-strip Project |
| File extension KLQ | Kaspersky Anti-Virus Quarantine Format |
| File extension KM | BMC Patrol |
| File extension KMA | Correlate Archive Knowledge Map |
| File extension KMC | Kinemac Animation Format |
| File extension KMCOBJ | Kinemac Sprite Object Format |
| File extension KMD | ABSTAT For Windows Batch |
| File extension KMDI | Kermeta |
| File extension KMDR | Kommander |
| File extension KMF | Kwalitan Memo |
| File extension KML | Google Earth Keyhole Markup Language Format |
| File extension KMM | K-Meleon Macro Module Format |
| File extension KMN | Keyman Developer Source |
| File extension KMP | Korg Trinity Audio Format |
| File extension KMR | KnowledgeMill Link Format |
| File extension KMS | Correlate Solution Topic |
| File extension KMT | Kermeta |
| File extension KMV | Mobile DJ Video Format |
| File extension KMX | Keyman Desktop Compiled Keyboard |
| File extension KMY | KMyMoney Data Format |
| File extension KMZ | Compressed Keyhole Markup Language (Google Earth) Format |
| File extension KNF | Orchida Knitting System |
| File extension KNN | Clarion Database Key |
| File extension KNNK | OmniPage |
| File extension KNO | DigIN Serialized Break Model |
| File extension KNT | Tranglos KeyNote Note Format |
| File extension KNW | Live For Speed AI Knowledge |
| File extension KO | Linux Kernel Module Format |
| File extension KOA | Koala Paint C64 |
| File extension KOB | Kasemake 3D Object |
| File extension KODAK | Kodak Photo CD Format |
| File extension KODU | Kodu Game Format |
| File extension KOE | AquesTone Vocal Synthesizer Syllable |
| File extension KOM | Kit-O-Mat 3D Model |
| File extension KOMODO | KMD |
| File extension KON | Yahoo! Widget XML Format |
| File extension KOOB | Koob E-Book Format |
| File extension KOR | Korean Localization Language Format |
| File extension KOZ | Sprint Music Store Music Format |
| File extension KPDX | KeePass Password Database |
| File extension KPE | KORE Performance |
| File extension KPF | Komodo Project Format |
| File extension KPJ | Keyman Developer Project |
| File extension KPL | KMPlayer Playlist Format |
| File extension KPP | Kid Pix Presentation Format |
| File extension KPR | KOffice KPresenter Presentation Format |
| File extension KPS | IBM KIPS Bitmap Image Graphics |
| File extension KPT | KPresenter Template |
| File extension KPX | Kid Pix Deluxe Data Format |
| File extension KPZ | Komodo Template Format |
| File extension KQP | Konica Camera Photo |
| File extension KR1 | Kurzweil 2000 Sample |
| File extension KRAW | Mac OS X Kernel-RAW Image Format |
| File extension KRC | Mouse And Key Recorder Recorded Settings |
| File extension KRG | Sybase Adaptive Server Information |
| File extension KRN | NBA 99 Fonts |
| File extension KRT | Microsoft Visual FoxPro Recreation |
| File extension KRZ | Kurzweil 2000 Sample Format |
| File extension KS | Microsoft Works Spreadsheet Format |
| File extension KS-IA1 | Infinite Algebra |
| File extension KS3 | 3D Forgastest Editor |
| File extension KSC | Korg Trinity Script Format |
| File extension KSD | Absynth Kore Patch Format |
| File extension KSDS | Absynth Kore Patch Format |
| File extension KSEQS | Kestrel Sequence Database |
| File extension KSF | Korg Trinity Sample Format |
| File extension KSH | Unix Shell Script |
| File extension KSI | Alloy Blending System ASCII Data |
| File extension KSL | Karaoke Song List Creator Song List |
| File extension KSM | Ken Silverman Music Format |
| File extension KSML | Halo Custom Edition |
| File extension KSP | Calligra Sheets Spreadsheet |
| File extension KSS | FabTrol MRP Template |
| File extension KT2 | Battery 2 Drum Kit File Format |
| File extension KT3 | Battery 3 Drum Kit File Format |
| File extension KTH | Apple IWork Keynote Theme Format |
| File extension KTN | KTooN Animation Format |
| File extension KTO | NetKar Pro Mid Ohio |
| File extension KTP | Cakewalk Kinetic Project Template |
| File extension KTX | Kwaitan |
| File extension KTZ | Kahootz Project Format |
| File extension KV6 | Ace Of Spades Model Format |
| File extension KVK | Keyman Desktop On Screen Keyboard |
| File extension KVT | KVIrc Theme |
| File extension KVTML | KWordQuiz Format |
| File extension KVW | Google Earth Workspace |
| File extension KWB | Kwalitan Work |
| File extension KWD | KWord Document Format |
| File extension KWF | Delphi Pascal Chart |
| File extension KWL | KWalletManager |
| File extension KWM | WebMoney Key Format |
| File extension KWP | Kamban Document |
| File extension KWREPLAY | Command & Conquer 3 Replay Format |
| File extension KWS | KeyWallet Skin |
| File extension KXX | Custom Keyman Engine Product |
| File extension KYB | Keyboard Layout Format |
| File extension KYN | ALSee Thumbnail Cache |
| File extension KYR | Lotus Domino Key Ring Format |
| File extension KYS | Adobe Keyboard Shortcut Format |
| File extension KZ | KuiaiZip Archive |
| File extension KZM | Karizma Designer Album |
| File extension KZX | Kerkythea Material |
File extensions in alphabetical order: K
The list of file extensions, sorted alphabetically, beginning with the letter K